Thai Ginger Chicken Salad

Name: Thai Ginger Chicken Salad
Ingredients: 2 Thai chiles, sliced; 1/2 cup fresh lime juice; 1/2 cup gluten-free fish sauce (such as Thai Kitchen brand); 1/4 cup sugar; 2 teaspoons plus 1 tablespoon chopped peeled fresh ginger; 1/2 garlic clove, chopped; 12 ounces rice stick noodles (maifun); 2 tablespoons (or more) vegetable oil; 1 pound skinless, boneless chicken breasts, cut into 1/2 cubes; 2 tablespoons finely chopped shallot; 1 tablespoon chopped fresh lemongrass from peeled bottom 4 of stalk; 2 cups (loosely packed) cilantro, coarsely chopped, divided; 1 cup (loosely packed) mint leaves, coarsely chopped, divided; 1 cup (loosely packed) basil leaves, coarsely chopped, divided; Large butter lettuce leaves; Ingredient info: Look for fish sauce, rice stick noodles, and lemongrass at better supermarkets and at Asian markets.